just updating this thread....
according to NAPA the part number is listed in their cpu as
Rear spring bushings
3.9L 1979 and newer FJ-55 wagon
-according to the charts posted on mud, the dimensions listed are by model and not year so im thinking they will work for my 1972
they dont show a part # for the fronts and only sell a shackle preloaded w/ bushings according to Carol

they also could not confirm dimensions, only that they came two to a package.
I ordered a set to try on the fronts, we shall see and I'll let you know what I find
Any other options uncovered since this post???